How much longer does Marv Albert plan to work, given his nearly half-century as a sports announcer and his age, which is 74?

“I think I have another 25, 30 [years] in me,” he joked Tuesday.

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As improbable as that seems, Albert will remain at Turner Sports at least for the time being after signing a contract extension that the network announced in advance of his calling the NBA All-Star Game Sunday in Toronto.

Albert is in his 18th season as a play-by-play man for the NBA on TNT.

As part of his new deal, he no longer will call NCAA Tournament basketball games. Albert said calling four games in one day and six in three during the first two rounds of the NCAAs simply was too much for his voice to handle.

“My voice the past couple of years, it actually took me out of doing NBA games for several weeks,” he said. “I felt it was the wiser move to go primarily NBA at this stage.”